-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
update through script - 2024-11-05 16:42:06
- Loading branch information
Showing
4 changed files
with
839 additions
and
0 deletions.
There are no files selected for viewing
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,89 @@ | ||
%From M275 "Topology" at SJSU | ||
\newcommand{\id}{\mathrm{id}} | ||
\newcommand{\taking}[1]{\xrightarrow{#1}} | ||
\newcommand{\inv}{^{-1}} | ||
|
||
%From M170 "Introduction to Graph Theory" at SJSU | ||
\DeclareMathOperator{\diam}{diam} | ||
\DeclareMathOperator{\ord}{ord} | ||
\newcommand{\defeq}{\overset{\mathrm{def}}{=}} | ||
|
||
%From the USAMO .tex files | ||
\newcommand{\ts}{\textsuperscript} | ||
\newcommand{\dg}{^\circ} | ||
\newcommand{\ii}{\item} | ||
|
||
% % From Math 55 and Math 145 at Harvard | ||
% \newenvironment{subproof}[1][Proof]{% | ||
% \begin{proof}[#1] \renewcommand{\qedsymbol}{$\blacksquare$}}% | ||
% {\end{proof}} | ||
|
||
\newcommand{\liff}{\leftrightarrow} | ||
\newcommand{\lthen}{\rightarrow} | ||
\newcommand{\opname}{\operatorname} | ||
\newcommand{\surjto}{\twoheadrightarrow} | ||
\newcommand{\injto}{\hookrightarrow} | ||
\newcommand{\On}{\mathrm{On}} % ordinals | ||
\DeclareMathOperator{\img}{im} % Image | ||
\DeclareMathOperator{\Img}{Im} % Image | ||
\DeclareMathOperator{\coker}{coker} % Cokernel | ||
\DeclareMathOperator{\Coker}{Coker} % Cokernel | ||
\DeclareMathOperator{\Ker}{Ker} % Kernel | ||
\DeclareMathOperator{\rank}{rank} | ||
\DeclareMathOperator{\Spec}{Spec} % spectrum | ||
\DeclareMathOperator{\Tr}{Tr} % trace | ||
\DeclareMathOperator{\pr}{pr} % projection | ||
\DeclareMathOperator{\ext}{ext} % extension | ||
\DeclareMathOperator{\pred}{pred} % predecessor | ||
\DeclareMathOperator{\dom}{dom} % domain | ||
\DeclareMathOperator{\ran}{ran} % range | ||
\DeclareMathOperator{\Hom}{Hom} % homomorphism | ||
\DeclareMathOperator{\Mor}{Mor} % morphisms | ||
\DeclareMathOperator{\End}{End} % endomorphism | ||
|
||
\newcommand{\eps}{\epsilon} | ||
\newcommand{\veps}{\varepsilon} | ||
\newcommand{\ol}{\overline} | ||
\newcommand{\ul}{\underline} | ||
\newcommand{\wt}{\widetilde} | ||
\newcommand{\wh}{\widehat} | ||
\newcommand{\vocab}[1]{\textbf{\color{blue} #1}} | ||
\providecommand{\half}{\frac{1}{2}} | ||
\newcommand{\dang}{\measuredangle} %% Directed angle | ||
\newcommand{\ray}[1]{\overrightarrow{#1}} | ||
\newcommand{\seg}[1]{\overline{#1}} | ||
\newcommand{\arc}[1]{\wideparen{#1}} | ||
\DeclareMathOperator{\cis}{cis} | ||
\DeclareMathOperator*{\lcm}{lcm} | ||
\DeclareMathOperator*{\argmin}{arg min} | ||
\DeclareMathOperator*{\argmax}{arg max} | ||
\newcommand{\cycsum}{\sum_{\mathrm{cyc}}} | ||
\newcommand{\symsum}{\sum_{\mathrm{sym}}} | ||
\newcommand{\cycprod}{\prod_{\mathrm{cyc}}} | ||
\newcommand{\symprod}{\prod_{\mathrm{sym}}} | ||
\newcommand{\Qed}{\begin{flushright}\qed\end{flushright}} | ||
\newcommand{\parinn}{\setlength{\parindent}{1cm}} | ||
\newcommand{\parinf}{\setlength{\parindent}{0cm}} | ||
% \newcommand{\norm}{\|\cdot\|} | ||
\newcommand{\inorm}{\norm_{\infty}} | ||
\newcommand{\opensets}{\{V_{\alpha}\}_{\alpha\in I}} | ||
\newcommand{\oset}{V_{\alpha}} | ||
\newcommand{\opset}[1]{V_{\alpha_{#1}}} | ||
\newcommand{\lub}{\text{lub}} | ||
\newcommand{\del}[2]{\frac{\partial #1}{\partial #2}} | ||
\newcommand{\Del}[3]{\frac{\partial^{#1} #2}{\partial^{#1} #3}} | ||
\newcommand{\deld}[2]{\dfrac{\partial #1}{\partial #2}} | ||
\newcommand{\Deld}[3]{\dfrac{\partial^{#1} #2}{\partial^{#1} #3}} | ||
\newcommand{\lm}{\lambda} | ||
\newcommand{\uin}{\mathbin{\rotatebox[origin=c]{90}{$\in$}}} | ||
\newcommand{\usubset}{\mathbin{\rotatebox[origin=c]{90}{$\subset$}}} | ||
\newcommand{\lt}{\left} | ||
\newcommand{\rt}{\right} | ||
\newcommand{\bs}[1]{\boldsymbol{#1}} | ||
\newcommand{\exs}{\exists} | ||
\newcommand{\st}{\strut} | ||
\newcommand{\dps}[1]{\displaystyle{#1}} | ||
|
||
\newcommand{\sol}{\setlength{\parindent}{0cm}\textbf{\textit{פתרון}}\setlength{\parindent}{1cm} } | ||
\newcommand{\solve}[1]{\setlength{\parindent}{0cm}\textbf{\textit{פתרון: }}\setlength{\parindent}{1cm}#1 \Qed} | ||
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,171 @@ | ||
% !TEX program = xelatex | ||
\documentclass[a4paper,12pt]{report} | ||
|
||
\input{preamble.tex} | ||
\input{macros.tex} | ||
|
||
|
||
% \textenglish{} | ||
% \begin{english} & \end{english} | ||
% ------------------------- | ||
|
||
\title{מתמטיקה בדידה ממ"ן 11} % Keep the title text here | ||
\author{אופק אסידו \textenglish{Ofek Asido}} | ||
\vspace{0.5cm} | ||
|
||
\date{current} | ||
|
||
\begin{document} | ||
|
||
\begin{titlepage} | ||
\centering | ||
\vspace*{2em} | ||
|
||
\includegraphics[width=0.2\textwidth]{assets/ou_logo} | ||
|
||
\vspace{2cm} | ||
|
||
\begin{tabular}{c} | ||
{\Huge\textbf{מתמטיקה בדידה}} \\ | ||
{\LARGE ממ"ח 01} | ||
\end{tabular} | ||
|
||
\vspace{2cm} | ||
|
||
{\Large אופק אסידו \textenglish{Ofek Asido}\\ID} | ||
|
||
\vspace{10cm} | ||
|
||
{\large \hebrewfont | ||
\today % This command prints the current date | ||
} | ||
|
||
\vspace*{2em} | ||
\end{titlepage} | ||
|
||
\section*{שאלה 1} | ||
\begin{enumerate} | ||
\item{ | ||
$\forall x \forall y \left(x^2 - y^2 - (x+y)(x-y)\right)$ | ||
\begin{align} | ||
\forall x \forall y & \left(x^2 - y^2 - (x+y)(x-y)\right) \\ | ||
\forall x \forall y & \left(x^2 - y^2 - (x^2-y^2)\right) \\ | ||
\forall x \forall y & (x^2 - y^2 - x^2 + y^2) \\ | ||
\forall x \forall y & (\cancel{x^2} - \cancel{y^2} - \cancel{x^2} + \cancel{y^2}) | ||
\end{align} | ||
\text{אינו פסוק.} | ||
} | ||
\item{ | ||
$\exists x \exists y \left(x^2 - y^2 - (x+y)(x-y) \neq 0\right)$ | ||
} | ||
\begin{align} | ||
\exists x \exists y & \left(x^2 - y^2 - (x+y)(x-y) \neq 0\right) \\* | ||
\notag \vdots \\ | ||
\forall x \forall y & (0 \neq 0) | ||
\end{align} | ||
\text{פסוק.} | ||
\end{enumerate} | ||
|
||
\begin{solution} | ||
סעיף ב' | ||
\end{solution} | ||
|
||
% -- | ||
|
||
\section*{שאלה 2} | ||
\text{(*) לכל מספר חיובי יש שורש ריבועי.} \\ | ||
\text{בהצרנה, נרשום כך:} \hspace{3.25cm} | ||
$\forall x \left(x>0 \rightarrow \exists y(y^2 = x) \right)$ | ||
|
||
\begin{enumerate} | ||
\item{ | ||
\text{שלילת הפסוק (*) שקולה לוגית ל:} | ||
\text{"אם מספר הוא שלילי אז אין לו שורש ריבועי"} | ||
\begin{align*} | ||
\forall x \left(x<0 \rightarrow \neg \exists y(y^2 = x) \right) | ||
\end{align*} | ||
\text{טענה זו אינה שוללת את הפסוק, כנדרש.} | ||
} | ||
\item{ | ||
\text{שלילת הפסוק (*) שקולה לוגית ל:} | ||
\text{"קיים מספר חיובי שאינו שורש ריבועי של אף מספר"} | ||
\begin{align*} | ||
\exists x (x>0) \rightarrow \forall y (x^2 \neq y) \\ | ||
\forall x \left(x>0 \rightarrow \neg \exists y(x^2 = y)\right) \\ | ||
\forall x \left(x>0 \rightarrow \exists y(x^2 \neq y)\right) \\ TODO | ||
\end{align*} | ||
} | ||
\end{enumerate} | ||
|
||
\begin{solution} | ||
סעיף ב' | ||
\end{solution} | ||
|
||
% -- | ||
|
||
\section*{שאלה 3} | ||
\begin{enumerate} | ||
\item{ | ||
\text{הפסוק:} | ||
"$1+101+101^2+\hdots+101^{100}=0.01(101^{101}-1)$" | ||
\textbf{או} | ||
"$\sqrt{11.12^2+8.88^2}=20$" | ||
\text{הוא אמת.} \\ | ||
\text{ראשית נבדוק את הטענה מצד ימין:} | ||
\begin{align} | ||
& 1+101^1+101^2=0.01(101^{3}-1) & & \times 100 \\ | ||
& 100+101*100+101^2*100=101^{3}-1 \\ | ||
& 101^3-101^2*100-101*100-101=0 \\ | ||
& 101^3-101^2*100-101*100=101 & & \div 101 \\ | ||
& 101^2-101*100-100=1 \\ | ||
& 101(101-100)=101 \\ | ||
& \boxed{101=101} \\ \notag | ||
& \text{(נוסחה מסדרות הנדסיות..)} | ||
\end{align} | ||
מכיוון שהפסוק מורכב עם \textbf{"או"}, מספיק שרק צד אחד נכון. ולכן טענה זו נכונה. | ||
} | ||
\item{ | ||
\text{הפסוק:} | ||
"$1:(2:(3:4))=(1:2):(3:4)$ | ||
\textbf{וגם} | ||
$1:(2:(3:4))=((1:2):3):4$" | ||
\text{הוא אמת.} \\ | ||
\text{ראשית נבדוק את הטענה מצד ימין:} | ||
\begin{align} | ||
& \ddfrac{1}{\ddfrac{2}{\left(\ddfrac{3}{4}\right)}} = \ddfrac{1}{\ddfrac{2}{1}*\ddfrac{4}{3}} = \ddfrac{1}{\ddfrac{8}{3}} = \boxed{\ddfrac{3}{8}} \\[1em] | ||
& \ddfrac{\ddfrac{1}{2}}{\ddfrac{3}{4}} = \ddfrac{1}{2}*\ddfrac{4}{3} = \ddfrac{4}{6} = \boxed{\ddfrac{2}{3}} | ||
\end{align} | ||
צד ימין של הפסוק אינו מתקיים, ולכן אין טעם לבדוק את צד שמאל. מכיוון ששני חלקי הפסוק אמורים להתקיים, \textbf{"וגם"}. ולכן, הפסוק אינו אמת. | ||
} | ||
\end{enumerate} | ||
|
||
\begin{solution} | ||
סעיף א' | ||
\end{solution} | ||
|
||
% -- | ||
|
||
\section*{שאלה 4} | ||
|
||
% -- | ||
|
||
\section*{שאלה 5} | ||
\begin{enumerate} | ||
\item{ | ||
\text{הפסוק הבא הוא אמת:} | ||
\hspace{1em} | ||
"$\left( (1<2) \textbf{ וגם } (2>3)\right) \textbf{אם }$, \textbf{אז} | ||
$(1=-1)$" \\ | ||
\text{הטענה לא נכונה, מכיוון ש $2<3$.} | ||
} | ||
\item{ | ||
\text{הפסוק הבא הוא אמת:} \\ | ||
"\textbf{לכל } $a,b,c,d$ ממשיים, \textbf{אם} $(a<b)$ \textbf{וגם} $(c<d)$, {\textbf{אז}} $(a<b)$ או $(c<d)$" \\ | ||
\text{הפסוק נכון טאוטולוגית.} | ||
} | ||
\end{enumerate} | ||
|
||
% -- | ||
|
||
\end{document} | ||
|
Oops, something went wrong.